I have used Jriver in place of a multichannel preamp for more than 10 years and it really can do everything that I need, especially with its facilitation of VST plug-ins. Once one achieves a stable setup, it (and the host) run 24/7 and updates install transparently.
I'll acknowledge the issues with their support but I have adapted to it. And, yes, to the on-screen presentation, as well. The need for substantial improvements in both do impede general acceptance, and while I would welcome that, its control and configuration option excede the constraints of hardware alternatives.
That said, if the OP can do better, I'm in.
It sounds like Jriver is trying to be too many things without having its user experience and interface design fully thought out. Most likely, it was designed by software engineers which means it works, but it’s a nightmare to use.
I’ve run into this many times as a designer and software user.
Any product design where you have to adjust to illogical process flows and information architecture is a pretty lousy design.
So, the basic concept;
• Accepts input from any media player
• Supports any audio channel layout
• Multi-channel, 3 band parametric EQ (for media playback… not everything is mastered well)
• Bass management
• Individual channel EQs
• Linear phase crossover filters for creating active speakers
• VST/AU plugin inserts for upmixing, spatial audio, Hafler circuit, time alignment, reverb processing and loudspeaker/room correction
• Latency compensation for synchronization of video to audio (if not available in the player)
• Presets for everything
At present, I’d have to us Apple Mainstage and a bunch of plugins to do this. It will work perfectly, but it’s not ideal.
Output from the Mac Mini would be to a MOTU 112D AES interface that would feed DACs for the active front channels/subs and Hypex Fusion amp active surrounds.
Obviously, this is not going to be a small project.